OBD Guide
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B27CC

Electric Compressor Voltage Limit

B27CC is an OBD-II diagnostic trouble code meaning: Electric Compressor Voltage Limit. Common causes: electric compressor malfunction, wiring harness damage. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Reduced efficiency of the air conditioning system
  • Unstable compressor operation
  • Check Engine Light Illuminates

Causes

  • Electric compressor malfunction
  • Wiring harness damage
  • Alternator or battery problems
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the voltage in the compressor circuit
  2. Inspect the wiring harness for damage
  3. Check the operation of the generator and battery
  4. Replace the electric compressor if necessary
  5. Update ECU firmware (if required)

Related codes

B27CDB27CEP0562P0563

FAQ

What does the B27CC code mean?

B27CC is an OBD-II diagnostic trouble code that indicates: Electric Compressor Voltage Limit

What causes a B27CC error code?

The most common causes of B27CC include: Electric compressor malfunction; Wiring harness damage; Alternator or battery problems; Engine control unit (ECU) malfunction.

How do I fix a B27CC diagnostic trouble code?

To fix B27CC: Check the voltage in the compressor circuit. Inspect the wiring harness for damage. Check the operation of the generator and battery. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B27CC?

Limited driving only, diagnose soon

How much does it cost to fix B27CC?

The estimated repair cost for B27CC is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat